Minimum clear over (in mm) to the steel bars in slab, beam, column and footing respectively. are

Q. Minimum clear cover (in mm) to the main steel bars in slab, beam, column and footing respectively are

Q. A continuous beam 250 mm x 450 mm carries 6 numbers of 12 mm diameter longitudinal bars as shown. The factored shear force at the point of inflection is 200 kN. Check if the beam is safe in bond. Assume M15 mix with ${\sigma }_{ck}=15N/m{m}^2$ and mild steel with ${\sigma }_y=250N/m{m}^2$. A clear cover of 25 mm canbe assumed. The design bond stress for mild steel bars in M15 concrete is specified to be 1.0 N/mm${}^2$

Q. Magnitudes of minimum reinforcement recommended for reinforced concrete using mild steel in slabs/columns are

Q. A reinforced concrete beam of rectangular section has a width of 300 mm and an effective depth of 500 mm. The effective cover to tension and compression steel is 40 mm each. The beam is reinforced with 4 bars of 20 mm diameter in tension and 2 bars of 16 mm diameter in compression. The grade of concrete used is M20 and steel is Fe145.
The depth of neutral axis is ____ mm.
[Assume $f_{sc}$ = 0.97 times allowable stress in tension steel]

Q. A simply supported beam of a beam and slab system, rests on a suport of width 450 mm. The clear span of the beam is 10.0 m. The thickness of the slab is 120 mm. The depth of the beam below the slab is 480 mm and the width of the beam is 250 mm. The beam is reinforced with one row of 32 mm diameter steel rods. The total load including the super imposed dead load, live load and its own weight is 25.0 kN/m at service stage. Compute the maximum nominal design shear stress in the concrete.